Machinery Safety 101

Understanding Risk Assessment

A group surrounding a computer discussing a problem.
This entry is part 10 of 9 in the series Risk Assess­ment

When people dis­cuss ‘Risk’ there are a lot of dif­fer­ent assump­tions made about what that means. For me, the study of risk and risk assess­ment tech­niques star­ted in 1995. As a tech­no­lo­gist…

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Missing MTTFd data

Deal­ing with the huge inform­a­tion void that exists while try­ing to com­plete reas­on­able con­trol reli­ab­il­ity assess­ments is a major chal­lenge for every engin­eer or tech­no­lo­gist tasked with this activ­ity. Here are a few thoughts on what to do now, and where things may be going…

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IEC/TR 62061 – 1 Reviewed

This entry is part 2 of 2 in the series IEC/TR 62061 – 1

Why You Need to Spend More Cash on Yet Anoth­er Doc­u­ment Stand­ards organ­iz­a­tions pub­lish doc­u­ments in a fairly con­tinu­ous stream, so for those of us tasked with stay­ing cur­rent with a large…

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Interlock Architectures – Pt. 3: Category 2

ISO 13849-1 Figure 10
This entry is part 3 of 8 in the series Cir­cuit Archi­tec­tures Explored

This art­icle explores the require­ments for safety related con­trol sys­tems meet­ing ISO 13849 – 1 Cat­egory 2 require­ments. “Gotcha!” points in the defin­i­tion are high­lighted to help design­ers avoid this com­mon pit­falls.

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New Guide to Applying ISO 13849 – 1 and IEC 62061

This entry is part 1 of 2 in the series IEC/TR 62061 – 1

IEC and ISO have pub­lished a new guide to help users select between ISO 13849 – 1 and IEC 62061. This new Tech­nic­al Report will replace Table 1 in both stand­ards.

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Safety is Good Business

In this excel­lent art­icle from Rock­well Auto­ma­tion’s The Journ­al, Mike Miller and Wayne Sol­berg explain how EN ISO 13849 – 1 and EN IEC 62061 mesh for machine build­ers.

Well worth the read in my opin­ion!

The Journ­al: Safety is Good Busi­ness – Mar­shall & Sol­berg

Interlock Architectures – Pt. 2: Category 1

This entry is part 2 of 8 in the series Cir­cuit Archi­tec­tures Explored

This art­icle expands on the first in the series “Inter­lock Archi­tec­tures – Pt. 1: What do those cat­egor­ies really mean?”. Learn about the basic cir­cuit archi­tec­tures that under­lie all safety inter­lock sys­tems under ISO 13849 – 1, and CSA Z432 and ANSI RIA R15.06.

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Interlock Architectures – Pt. 1: What do those categories really mean?

Basic Stop/Start Circuit
This entry is part 1 of 8 in the series Cir­cuit Archi­tec­tures Explored

In 1995 CEN pub­lished an import­ant stand­ard for machine build­ers – EN 954 – 1, Safety of Machinery – Safety Related Parts of Con­trol Sys­tems – Part 1: Gen­er­al Prin­ciples for Design. This stand­ard set the stage for defin­ing con­trol reli­ab­il­ity in machinery safe­guard­ing sys­tems, intro­du­cing the Reli­ab­il­ity cat­egor­ies that have become ubi­quit­ous. So what do these cat­egor­ies mean, and how are they applied under the latest machinery stand­ard, ISO 13849 – 1?

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Update on EN ISO 13849 – 1 Mandatory Implementation Date

The machinery world con­tin­ues to wait for the European Com­mis­sion to reveal the new Man­dat­ory Imple­ment­a­tion Date for EN ISO 13849 – 1.

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